Liquid deflector means for use in tube spinning apparatus for rayon and the like



Nov. 29, 1955 E. J. GRlsEr, JR 2,724,957 I LIQUID DEFLECTOR MEANS FORUSE IN TUBE SPINNING APPARATUS FOR RAYON AND THE LIKE Filed April 27,1953 2 Sheets-Sheet 1 IN VENTOR ATTORNEY Nov. 29, 1955 E. J. GRlsET, JR2,724,957

LIQUID DEFLECTOR MEANS FOR USE IN TUBE SPINNING APPARATUS FOR RAYON ANDTHE LIKE Filed April 27, 195s 2 Sheets-Sheet 2 jy. J.

INVENTOR lmffJ. rllfeQ/z:

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ATTORNEY United States Patent O LIQUID DEFLECTOR MEANS FOR USE 1N TUBESPINNING APPARATUS FOR RAYON AND THE LIKE Ernest J. Griset, Jr.,Asheville, N. C., assignor to American Enka Corporation, Enka, N. C., acorporation of Delaware Application April 27, 1953, Serial No. 351,234

This invention relates to tube spinning and more particularly to thoseportions of tube spinning apparatus that effect the introduction of arunning yarn into a tube and the transfer of yarn from one tube toanother.

In the tube spinning art succeeding portions of a yarn are subjected tothe action of different treating liquids which not only effect treatmentof the yarn but also propel it through the tubes. Consequently, a tubespinning system usually includes a plurality of tubes for serving eachspinning position and the problem of transferring the yarn from one tubeto the other must be faced.

The transfer problem is really a dual one involving the temporaryconditions prevailing only during spinning-in and the more permanentconditions prevailing during all stages of the operation. Duringspinning-in the yarn and propelling liquid must go together to anintroduction zone in which the yarn is introduced into the next tube ofthe particular series used. Thereafter, to avoid treating liquidintermixing and to facilitate liquid recovery, the yarn is caused tocontinue to move to the mouth of the next tube while the liquid issuingfrom the preceding tube is caused to follow a divergent path in relationto the yarn. This act of separating the yarn and the liquid afterspinning-in often produces wasteful and troublesome splash.

At all stages of the tube spinning operation each treating tube has ajet of liquid being ejected into its mouth and, when the jet nozzle isspaced from the mouth of the tube being served, alignment is critical inorder to insure proper propulsion speeds and the avoidance of splash.While these problems exist in tube spinning generally, it will beappreciated that in the treatment of tow, where a number of yarns arehandled simultaneously, the larger volume of liquid being handled is anaggravating circumstance.

It is an object of this invention to provide for theV simple and wastefree introduction of treating liquid into spinning tubes underconditions which also reduce the splash and waste incident to theseparation of treating liquid and yarn paths after spinning-in.

lt is a further object of this invention to provide for the introductionof treating liquids into tubes in a manner to avoid nozzle alignmentdiiiculties.

It is proposed, according to this invention to separate the yarn andliquid issuing from a spinning tube in such a manner that any splashincident to this separation is inconsequential.

Other objects and advantages of this invention will be apparent uponconsideration of the following detailed description of severalembodiments thereof in conjunction with the annexed drawings wherein:

Figure 1 is a view partially in section and partially in elevation of aportion of a tube spinning system showing a liquid introductionarrangement according to the present invention.

Figure 2 is also a view in elevation and vertical section but it alsoshows a different liquid and yarn transfer detiector arrangement betweenthe exit end of one tube of a series and the mouth of the next tubethereof;

Figure 3 is a top plan view of the arrangement of Figure 2 showing thespinning in position of the detlector in full lines and the normaloperating position in broken lines;

Figure 4 is another view in elevation and vertical sec-` tion, but, inthis view, a liquid introduction arrangement diirerent from that ofFigure 1 is shown as well as a deliector arrangement different fromFigures 13, inclusive;

Figure 5 is a fragmentary view in longitudinal section of the liquidintroduction scheme of Figures l, 2 and 3;

Figure 6 is a similar view of the liquid introduction scheme of Figure4; and

Figure 7 is a fragmentary View in longitudinal section of a thirdmodification of the liquid introduction arrangement.

It is to be understood that this invention is a continuation-in-part ofGriset application Serial No. 122,560, tiled October 20, 1949, and thatthe improvements of this invention relate to but a portion 0f thespinning system of the parent case. In the parent application it isexplained that a yarn to be after treated is introduced into a tubethrough which it is propelled by a treating liquid and that upon issuingfrom that tube it is introduced into another until it has progressedthrough a series of tubes sufficient to accomplish the desired treatmentof the yarns.

Figure l of the present case shows an end 10 of one treating tube 11 andthe mouth 12 of the next tube 13 of the system. Tubes 11 and 13 aresupported in a jet box structure 14 which may, and usually does, supportother tubes of the system which are not shown in Figure l. The box 14 isprovided with a drain boss 15 registered below the exit end 10 of thetube 11 and with another drain boss 16 registered below the mouth 12 ofthe tube 13.

Bridging the space between the exit end 10 of the tube 11 and theentrance mouth 12 of the tube 13 there is a p detiector 17 comprised ofa movable upper part 18 and a stationary lower part 19. The two parts 18and 19 (when the part 18 is in the broken line position of Figure 1)define a groove which serves to guide liquid and yarn issuing from thetube 11 to a point adjacent the mouth 12 of the tube 13. This positionis kept until the yarn is running in the tube 13 whereupon the portion18 of the deliector is moved to the solid line position of Figure l sothat liquid issuing from the end 10 of the tube 11 flows out of the boss15 to recovery all in a manner described in Serial No. 122,5 60, filedOctober 20, 1949.

The tube 13 is supplied with liquid from a tube 20 provided with anozzle 21. While in application Serial No. 122,560, mentioned above,there is a nozzle for ejecting liquid into the mouth of the treatmenttube, the arrangement of the parent case is one in which the nozzle isspaced away from the mouth of the treating tube rather than beingdisposed within the treating tube beyond its mouth as is the ease inFigure l. The tubes 11 and 13 of Figure l may be tubes of large internaldiameter of the type used in the treatment of tow. Thus, the mouth 12 ofthe tube 13 is so dimensioned as to accommodate entering tow as Well asthe nozzle 21. The jet of liquid issuing from nozzle 21 creates anegative pressure zone at the mouth 12 of the tube 13 whereby yarn issucked in. This is also true if the nozzle lies without the treatmenttube as shown in Serial No. 122,560. however, alignment dilicultiesinherent in spacing the nozzle away from the mouth of the tube areavoided.

It will be noted that the deiiector 17 of Figure l has its portion 18mounted for rotation about a horizontal axis at 22. In rotating about ahorizontal axis, it is evident that the channel defining part movesagainst the stream issuing from the exit end 10 of the tube 11, but itcauses little splash during the counter-clockwise shift from the brokenline to the full line position because of the short total length ofportion 18.

In the arrangement of Figure l hereof,l

In Figure 2 there is shown a different arrangement in which the deeetorrotates about a vertical rather than a horizontal axis. In Figures 2 and3 parts identical to parts shown in Figure l bear like referencenumerals and function in the same way. The difference, then,betweenFigure ll and Figures 2 and 3 lies entirely in the deector andthe portion of the jet box on which it is mounted. The deiiector 23 ofFigures 2 and 3 is a unitary structure, but it has about the same shapeas the over-all shape of the deector 17 of Figure l when the'part 18 isin the broken line position of Figure l. The detlector 23 includes achannel 24 extending between the end 10 of the tube 11 and the mouth 12of the tube 13. The bottom of the deector 23 is provided with acylindrical cavity into which therel projects a pivot pin 25 extendingup from or constituting a part of the jet box 26. Since the detlector 23is mounted on the pin 25 for rotation thereabout, it is evident thatonce spinning-in is completed, the deliector may be turned at rightangles from the full line to the broken line position of Figures 2 and 3whereby to establish a iiow path between the end of the tube 11 and bossof the jet box 26, while permitting the yarn or tow issuing from tube`11 to continue to enter the mouth 12 of the tube I3. In view of theslope of the deector 23 and the position of the pin 25, it is possibleto separate the liquid and yarns issuing from the tube 11 almostinstantly by rotating the deector 23 90 clockwise as viewed in Figure 3from the full line position to the broken line position. The movement isso quick that any splashing endures for such a short interval of time asto be inconsequential from the point of view of plant operation.

In Figure 4 there is shown another type of deector which results insplash free operation largely because of the path of its movement. InFigure 4 the jet box bears numeral 27 and the tubes which areillustrated include a treating tube 28, having a discharge end 29registering with a drain boss 30 and a treating tube 31, having a mouth32 registering with a drain boss 33. The housing 27 supports a deector34 rotatable about a horizontal axis at 35. The deiiector 34, in commonwith the deectors 17 and 23, defines a channel between the end 29 of onetube and the mouth 32 of the next tube in the series. In Figure 4 thechannel bears reference numeral 36. After spinning-in, the deector 34can be rotated about 90 in a clockwise direction from the full line tothe broken line position of Figure 4 in order to permit the liquidissuing from the tube 28 to flow out of the boss 30, While the yarn ortow continues to run from the end 29 of the tube 28 to the mouth 32 ofthe tube 3l.

The foregoing movement of the deflector 34 is made possible by thedisposition and shape of the tube 37 which supplies liquid to the tube31. The tube 37 enters the box 27 through a rubber sleeve 38 and, nearthe upper end of tube 37, there is `a bend which leads to nozzle 39which lies within the tube 31, in about the same position as the nozzle21 in relation to the tube 13. The exact position of the nozzle in thetube can be appreciated by a comparative study of Figures 5 and 6. InyFigures 5 and 6 the nozzles 21 and 39, respectively7 are shown insection so that their exact position can be particularly appreciated.

In Figure 7 there is shown another type of tube and nozzle arrangementsimilar to the arrangement of Figures 4 and 6 except that the supplytube instead of entering the treating tube 40 through its mouth 41passes through a portion of the tube wall. The effect in operation isquite similar to the effect of Figure 6, but an advantage accrues due tothe fact that the mouth 41 is unobstructed for easy entrance of the tow.

While Figures l, 2 and 4 show only the discharge end of one treatingtube and the entry end of the next tube in the series, it is to beunderstood that the deflector and liquid supply arrangements of thesegures can be ap plied to all of the tubes of a series, whatever numberis required to accomplish the desired liquid treatment.

While this invention has been described in respect of the aftertreatmentof tow, it is apparent that the disposition of the liquid supply nozzleswithin the treating tubes is possible in any of the larger size rangesof tubes. The smaller tube sizes are best accommodated by the Figure 7arrangement where the mouth 41 is unobstructed.

What is claimed is:

1. Tube spinning apparatus comprising yarn and liquid delivery means, atreating tube, said means having an exit end above and horizontallyoffset, from the mouth of said tube, a deector having a channel therein,and means supporting said deflector for pivotal movement about avertical axis to and from a position in which its channel defines a Pathbttween said exit end and said mouth and a position in which it is outof registry with said exit end.

2. Tube spinning apparatus comprising yarn and liquid delivery means, atreating tube, said means having' an exit end above and horizontallyoffset from the mouth of said tube, a liquid supply tube having a nozzlewithin said treating tube beyond the mouth thereof, a deflector having achannel therein, and means supporting said deflector for pivotalmovement about an axis to and from a position in which its channeldefines a path between said exit end and said mouth and a position inwhich it is out of registry with said exit end.

3. Tube spinning apparatus comprising yarn and liquid delivery means, atreating tube, said means having an exit end above and horizontallyotset from the mouth of said tube, a liquid supply tube extending in apath at an angle to said treating tube, said supply tube being curvedand having a nozzle near its end aligned with the treating tube, adefleetor having a channel therein, and means supporting said deectorfor pivotal movement downwardly about an axis to and from a position inwhich its channel defines a path between said exit end and said mouthand a position in which it is out of registry with said exit end.

4. Tube spinning apparatus comprising yarn and liquid delivery means, atreating tube, said means having an exit end above and horizontallyoffset from the mouth of said tube, a liquid supply tube defining withsaid treating tube an angle, said supply tube passing through the wallof said treating tube and terminating in a nozzle extending parallel tothe said treating tube, a deector having a channel therein, and meanssupporting said deflector for pivotal movement downwardly about au axisto and from a position in which its channel defines a path between saidexit end and said mouth and a position in which it is out of registrywith said exit end.

5. Tube spinning apparatus comprising yarn and liquid delivery means, atreating tube, said means having an exit end above and horizontallyoffset from the mouth of said tube, a liquid supply tube extending in apath at an angle to said treating tube, said supply tube being curvedand having a nozzle near its end aligned with, and lying within, thetreating tube, a deector having a channel therein, and means supportingsaid deector for pivotal movement downwardly in a path intersecting aline, constituting an axial extension of said treating tube, about yanaxis to and from a position in which its channel denes a path betweensaid exit end and said mouth and a position in which it is out oflregistry with said .exit end.

References Cited inthe tile of this patent UNITED STATES PATENTS

